1 Wedding invitation costs can range from $1.50 each with do-it-yourself kits from craft stores to $3 or $4 each for mid-range standardized invitations on mid-weight paper to $9 or more each for invitations that use a high-end printing process -- such as engraving or letterpress -- on quality handmade or silk paper. The per-invitation cost goes up with extra folds -- tri-fold costs more than bi-fold -- or lining on the invitations or envelopes. 2  The average couple spends $659 on invitations and reply-cards, according to The Bridal Association of America.
The highest sea-level pressure on Earth occurs in Siberia, where the Siberian High often attains a sea-level pressure above 1050.0 mbar (105.00 kPa, 30.01 inHg), with record highs close to 1085.0 mbar (108.50 kPa, 32.04 inHg).
The atmospheric pressure on Earth's surface averages 101.325 kPa, with a scale height of about 8.5 km. It has a composition of 78% nitrogen and 21% oxygen, with trace amounts of water vapor, carbon dioxide and other gaseous molecules.